Finland is the world’s happiest country, according to an annual survey issued on Wednesday that put Burundi at the bottom of the happiness index and Nigerians at 91st position.

The survey also found Americans were getting less happy even as their country became richer.

The UN Sustainable Development Solutions Network’s 2018 World Happiness Report ranked 156 countries according to their scores for things such as GDP per capita, social support, healthy life expectancy, social freedom, generosity and absence of corruption. Read more